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Malicious package

prx1b49033905RubyGems

Advisory published Updated

prx1b49033905 is a confirmed malicious RubyGems package (MAL-2026-8456) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in prx1b49033905 (RubyGems)

MAL-2026-8456
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall prx1b49033905

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

4f2bcf072486712fb6f17791735e2ea53af91d55709ccfc8e639ca9b10bb7592
b0a4b943f5674575b3a9293e6b20db577626ca6941db0871abeeefcaeb35b232

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for prx1b49033905 (version 0.0.1).

  2. If you installed it — respond

    Remove prx1b49033905 from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If prx1b49033905 was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. prx1b49033905 on RubyGems has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-03107RLUA-2026-08982

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks prx1b49033905-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

prx1b49033905 (RubyGems) malicious package — MAL-2026-8456 | O3 Security